西安电子科技大学学报（自然科学版）2017，Vol.44Issue(3)：25-30,6.DOI:10.3969/j.issn.1001-2400.2017.03.005
规则LDPC码在GPU上的加速译码
Decoding of regular LDPC codes accelerated by the GPU
摘要
Abstract
To take advantage of the high speed parallel feature of the GPU and the parallel section in the regular LDPC codes decoding process,a method is proposed by which the GPU is used to accelerate decoding of regular LDPC codes.In this method,edges of nodes are used in parallel decoding instead of nodes themselves to improve the utilization of threads.At the same time,the use of the high-speed on-chip GPU memory-shared memory and registers to store data makes data reduce dependence on global memory and shorten access time.Simulation results show that,by using parallel computing on edges and the on-chip memory,the decoding speed can be 5.32 ～ 10.41 times relative to the LDPC codes decoding program that does not use the optimization method of this paper based on the GPU.关键词
低密度奇偶校验码/图形处理器/统一计算设备架构/并行计算/共享内存/寄存器Key words
low density parity-check(LDPC) codes/graphic processing unit (GPU)/compute unified device architecture(CUDA)/parallel computing/shared memory/registers分类
信息技术与安全科学引用本文复制引用
任计林,车书玲,郑征..规则LDPC码在GPU上的加速译码[J].西安电子科技大学学报（自然科学版）,2017,44(3):25-30,6.基金项目
国家自然科学基金资助项目(61101148) （61101148）
中央高校基本科研业务费专项资金资助项目(K5051301008) （K5051301008）
